drill
Cross references: 1. practice 1. drill \'dril\ vb [D drillen; akin to OHG dra-en to turn] 1: to pierce or bore with or as if with a drill 2a: to instruct thoroughly 2b: to impart or communicate by repetition 2c: to train or exercise in military evolutions and the use of weapons 1: to make a hole with a drill 2: to engage in an exercise 3: to act like or have the effect of a drill - drill.er n 2. drill n 1: an instrument with an edged or pointed end for making holes in hard subs tances by revolving or by a succession of blows; also : such an instrument with the machine for operating it 2: the act or exercise of training soldiers in military skill and disciplin e 3a: a physical or mental exercise aimed at perfecting facility and skill es p. by regular practice 3b: a formal exercise by a team of marchers chiefly Brit 3c: the approved or correct procedure for accomplishing something efficient ly 4: a marine snail (Urosalpinx cinerea) destructive to oysters by bori ng through their shells and feeding on the soft parts; broadly : any of several mollusks related to the drill 5: a drilling sound 3. drill n [prob. native name in West Africa] : a West African baboon (Mandrillus leucophaeus) closely related to the typical mandrills 4. drill n [perh. fr. drill (rill)] 1a: a shallow furrow or trench into which seed is sown 1b: a row of seed sown in such a furrow 2: a planting implement that makes holes or furrows, drops in the seed and sometimes fertilizer, and covers them with earth 5. drill vt 1: to sow (seeds) by dropping along a shallow furrow 2a: to sow with seed or set with seedlings inserted in drills 2b: to distribute seed or fertilizer in by means of a drill 6. drill n [short for drilling] : a durable cotton fabric in twill weave
Webster's English Dictionary